Trimex Arms Available Spare Parts: 10 x Trimex Arms Filling Probe O-Ring Seals £4.75 In stock 5 x Trimex Arms Breech / Barrel Inner O-Ring Seals £4.73 In stock Trimex Arms Bursting Disc £4.75 In stock Trimex Arms Filling / Charging Adaptor Probe £14.95 In stock